<template>
  <div class="xtx-cart-page">
    <div class="container">
      <XtxBread>
        <XtxBreadItem to="/">首页</XtxBreadItem>
        <XtxBreadItem>购物车</XtxBreadItem>
      </XtxBread>
      <div class="cart">
        <table>
          <thead>
            <tr>
              <th width="120"><XtxCheckbox v-model="isAllEffectSelected" @change="checkEffectAll">全选</XtxCheckbox></th>
              <th width="400">商品信息</th>
              <th width="220">单价</th>
              <th width="180">数量</th>
              <th width="180">小计</th>
              <th width="140">操作</th>
            </tr>
          </thead>
          <!-- 有效商品 -->
          <tbody>
              <tr v-if="effectiveList.length === 0">
              <td colspan="6">
                <div class="cart-none" style="text-align: center;">
                  <img src="~@/assets/images/none.png" alt="">
                  <p>购物车内暂时没有商品</p>
                  <div class="btn" style="margin: 20px">
                    <XtxButton type="primary">继续逛逛</XtxButton>
                  </div>
                </div>
              </td>
            </tr>
            <tr v-for="item in effectiveList" :key="item.skuId">
              <td><XtxCheckbox @change="$store.dispatch('cart/asyncUpdateCartSingle', {skuId: item.skuId, selected: item.selected})"  v-model="item.selected"/></td>
              <td>
                <div class="goods">
                  <RouterLink :to="`/product/${item.id}`"><img :src="item.picture" alt=""></RouterLink>
                  <div>
                    <p class="name ellipsis">{{item.name}}</p>
                    <p class="attr">{{item.attrsText}}</p>
                  </div>
                </div>
              </td>
              <td class="tc">
                <p>&yen;{{ item.nowPrice }}</p>
                <p v-if="item.price - item.nowPrice > 0">比加入时降价 <span class="red">&yen;{{ (item.price - item.nowPrice).toFixed(2) }}</span></p>
              </td>
              <td class="tc">
                <XtxNumbox @change="$store.dispatch('cart/asyncUpdateCartSingle', { skuId:item.skuId, count: item.count })"  :isLabel="false" :max="item.stock" v-model="item.count" />
              </td>
              <td class="tc"><p class="f16 red">&yen;{{ (item.nowPrice * item.count).toFixed(2) }}</p></td>
              <td class="tc">
                <p><a href="javascript:;">移入收藏夹</a></p>
                <p ><a @click="$store.dispatch('cart/asyncDeleteCart', item.skuId)" class="green" href="javascript:;">删除</a></p>
                <p><a href="javascript:;">找相似</a></p>
              </td>
            </tr>
          </tbody>
          <!-- 无效商品 -->
          <tbody>
            <tr><td colspan="6"><h3 class="tit">失效商品</h3></td></tr>
            <tr v-for="i in 3" :key="i">
              <td></td>
              <td>
                <div class="goods">
                  <RouterLink to="/"><img src="https://yanxuan-item.nosdn.127.net/13ab302f8f2c954d873f03be36f8fb03.png" alt=""></RouterLink>
                  <div>
                    <p class="name ellipsis">和手足干裂说拜拜 ingrams手足皲裂修复霜</p>
                    <p class="attr">颜色：粉色 尺寸：14cm 产地：中国</p>
                  </div>
                </div>
              </td>
              <td class="tc"><p>&yen;200.00</p></td>
              <td class="tc">1</td>
              <td class="tc"><p>&yen;200.00</p></td>
              <td class="tc">
                <p><a class="green" href="javascript:;">删除</a></p>
                <p><a href="javascript:;">找相似</a></p>
              </td>
            </tr>
          </tbody>
        </table>
      </div>
      <!-- 操作栏 -->
      <div class="action">
        <div class="batch"></div>
        <div class="total">
          共 {{effectiveTotal}} 件有效商品，已选择 {{selectedListTotal}} 件，商品合计：
          <span class="red">¥{{selectedListTotalPrice}}</span>
          <XtxButton type="primary" @click="goToSettlement">下单结算</XtxButton>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { computed } from 'vue'
import { useStore } from 'vuex'
import { message } from '@/components/Message'
import router from '@/router'

export default {
  name: 'XtxCartPage',
  setup () {
    const store = useStore()
    // console.log(store)
    // 通过 computed 获取到 VueX 的 getters 数据
    const effectiveList = computed(() => store.getters['cart/effectiveList'])
    const effectiveTotal = computed(() => store.getters['cart/effectiveTotal'])
    const effectiveTotalPrice = computed(() => store.getters['cart/effectiveTotalPrice'])
    const selectedList = computed(() => store.getters['cart/selectedList'])
    const selectedListTotal = computed(() => store.getters['cart/selectedListTotal'])
    const selectedListTotalPrice = computed(() => store.getters['cart/selectedListTotalPrice'])
    // const isAllEffectSelected = computed(() => store.getters['cart/isAllEffectSelected'])

    // vuex 和 v-model 组合使用；可配合 compted 计算函数 get/set实现
    const isAllEffectSelected = computed({
      get: () => store.getters['cart/isAllEffectSelected'],
      set: (val) => {
        store.dispatch('cart/asyncCheckEffectAll', val)
      }
    })
    // 下单
    const goToSettlement = () => {
      // 1.判断是否登录 token
      if (!store.getters.token) return message({ text: '您还未登陆' })
      // 2. 判断是否选中有效的商品  数量不能为零
      if (!selectedListTotal.value) return message({ text: '请选择下单商品' })
      // 3. 跳转页面
      router.push('/settlement')
    }

    // 点击全选按钮
    // const checkEffectAll = (val) => {
    //   store.dispatch('cart/asyncCheckEffectAll', val)
    // }
    // 返回给模板使用
    return {
      selectedList,
      selectedListTotal,
      selectedListTotalPrice,
      effectiveList,
      effectiveTotal,
      effectiveTotalPrice,
      isAllEffectSelected,
      // checkEffectAll
      goToSettlement
    }
  }
}
</script>

<style scoped lang="less">
.tc {
  text-align: center;
  .xtx-numbox {
    margin: 0 auto;
    width: 120px;
  }
}
.red {
  color: @priceColor;
}
.green {
  color: @xtxColor
}
.f16 {
  font-size: 16px;
}
.goods {
  display: flex;
  align-items: center;
  img {
    width: 100px;
    height: 100px;
  }
  > div {
    width: 280px;
    font-size: 16px;
    padding-left: 10px;
    .attr {
      font-size: 14px;
      color: #999;
    }
  }
}
.action {
  display: flex;
  background: #fff;
  margin-top: 20px;
  height: 80px;
  align-items: center;
  font-size: 16px;
  justify-content: space-between;
  padding: 0 30px;
  .xtx-checkbox {
    color: #999;
  }
  .batch {
    a {
      margin-left: 20px;
    }
  }
  .red {
    font-size: 18px;
    margin-right: 20px;
    font-weight: bold;
  }
}
.tit {
  color: #666;
  font-size: 16px;
  font-weight: normal;
  line-height: 50px;
}
.xtx-cart-page {
  .cart {
    background: #fff;
    color: #666;
    table {
      border-spacing: 0;
      border-collapse: collapse;
      line-height: 24px;
      th,td{
        padding: 10px;
        border-bottom: 1px solid #f5f5f5;
        &:first-child {
          text-align: left;
          padding-left: 30px;
          color: #999;
        }
      }
      th {
        font-size: 16px;
        font-weight: normal;
        line-height: 50px;
      }
    }
  }
}
</style>
